package {
	/*
	** @name		: MioDocumento.as
	** @description : [descrizione]
	** @author	  : =undo=
	** @web		 : http://www.undolog.com
	** @email	   : [email protected] - g (dot) fazioli (at) undolog (dot) com
	** @ver		 : 1.0
	*/
	import flash.display.*;
	import flash.events.*;
	public class MioDocumento extends MovieClip {
		/*
		** @private var
		*/
		public function MainFive():void {
			addEventListener(Event.ADDED_TO_STAGE, init );
		}
		/*
		** @name		   : init()
		** @description	: trigged when added to stage
		*/
		protected function init(e:Event):void {
			// todo
		}
	} // constructor
} // package

http://www.undolog.com/2008/05/02/flash-cs3-template-per-la-classe-documento/

Memo

Flash CS3: template per la classe Documento

class

ActionScript 3